package com.ndf.learn.interceptor;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;

/**
 * Created by lin on 4/8/18.
 */
public class ResultModifyInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("ResultModifyInterceptor preHandle......");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("ResultModifyInterceptor postHandle......");
        if(modelAndView != null){
            Map<String, Object> data = modelAndView.getModel();
            if(data != null){
                data.put("t", System.currentTimeMillis());
            }
        }
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("ResultModifyInterceptor afterCompletion......");
    }
}
